I have updated my bios to the latest version # 1056 for the DQ35JO in order to support a Core2Quad 9550 (SLB8V). However, now Xen is saying that VT is not enabled on the chip. Also, the new bios shows no options to configure VT or VT-d anymore. Xen does detect and enable VT-d properly, but not VT.
Has something changed in the Bios that would cause VT to no longer work?